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Finding the Fourth Proportional to 74,626.92, 111,940.38 and 61,451.87

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Solution

The fourth proportional to 74,626.92, 111,940.38 and 61,451.87 is: 92,177.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,626.92 : 111,940.38 = 61,451.87 : x
  2. Step 2: Convert to fraction form
    74,626.92/111,940.38 = 61,451.87/x
  3. Step 3: Cross multiply
    74,626.92x = 111,940.38 × 61,451.87
  4. Step 4: Simplify right side
    74,626.92x = 6,878,945,119.81
  5. Step 5: Solve for x
    x = 6,878,945,119.81/74,626.92
  6. Step 6: Final answer
    x = 92,177.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.